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Related Concept Videos

Anatomy of the Ear01:16

Anatomy of the Ear

Auditory sensation, commonly called hearing, involves the transformation of sonic waves into neural impulses facilitated by the structures of the auditory organ. The prominent, flesh-like structure on the side of the head, called the auricle, directs sound waves towards the auditory canal. The auricle is often mislabeled as the pinna, a term more aligned with mobile structures like a feline's external ear. The auditory canal penetrates the cranium via the external auditory meatus of the...
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Related Experiment Video

Updated: Jul 25, 2026

A Comparative Study of Drug Delivery Methods Targeted to the Mouse Inner Ear: Bullostomy Versus Transtympanic Injection
09:18

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Intratympanic gentamicin therapy for vertigo in nonserviceable ears.

P W Bauer1, C B MacDonald, L C Cox

  • 1Department of Otolaryngology-Head and Neck Surgery, Boston University School of Medicine, Boston, MA, USA.

American Journal of Otolaryngology
|April 3, 2001
PubMed
Summary

Intratympanic gentamicin injections effectively controlled vertigo in patients with nonserviceable hearing due to various end-organ diseases. This minimally invasive treatment offers a safe and cost-effective solution for managing severe vertigo when hearing preservation is not a concern.

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Area of Science:

  • Otolaryngology
  • Neurology
  • Vestibular System

Background:

  • Intratympanic ototoxic agents are established for Meniere's disease vertigo management with hearing preservation.
  • Expanding indications for intratympanic gentamicin is explored for patients lacking serviceable hearing.

Purpose of the Study:

  • To evaluate the efficacy of intratympanic gentamicin for vertigo control in patients with nonserviceable hearing from diverse end-organ pathologies.
  • To assess the safety and effectiveness of unilateral vestibular ablation using serial intratympanic gentamicin injections.

Main Methods:

  • Retrospective case series of 6 patients with vertigo and nonserviceable hearing.
  • Conditions included delayed endolymphatic hydrops, Meniere's disease, and poststapedectomy vertigo.
  • Evaluations included electronystagmography (ENG), audiometry, and magnetic resonance imaging (MRI); rotational testing monitored vestibular response.

Main Results:

  • All 6 patients achieved successful vertigo control.
  • Follow-up ranged from 10 to 69 months.

Conclusions:

  • Intratympanic gentamicin is a minimally invasive, ambulatory, low-morbidity, and cost-effective vertigo management option.
  • This therapy is suitable for patients with nonserviceable hearing and various peripheral vestibular disorders.